Home / 1,121,429.79-1,682,063.35-438,188.21

Finding the Fourth Proportional to 1,121,429.79, 1,682,063.35 and 438,188.21

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Solution

The fourth proportional to 1,121,429.79, 1,682,063.35 and 438,188.21 is: 657,250.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,429.79 : 1,682,063.35 = 438,188.21 : x
  2. Step 2: Convert to fraction form
    1,121,429.79/1,682,063.35 = 438,188.21/x
  3. Step 3: Cross multiply
    1,121,429.79x = 1,682,063.35 × 438,188.21
  4. Step 4: Simplify right side
    1,121,429.79x = 737,060,328,443.10
  5. Step 5: Solve for x
    x = 737,060,328,443.10/1,121,429.79
  6. Step 6: Final answer
    x = 657,250.53

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.